4 #include "run-command.h"
12 struct child_process *helper;
16 static struct child_process *get_helper(struct transport *transport)
18 struct helper_data *data = transport->data;
19 struct strbuf buf = STRBUF_INIT;
20 struct child_process *helper;
26 helper = xcalloc(1, sizeof(*helper));
30 helper->argv = xcalloc(4, sizeof(*helper->argv));
31 strbuf_addf(&buf, "remote-%s", data->name);
32 helper->argv[0] = strbuf_detach(&buf, NULL);
33 helper->argv[1] = transport->remote->name;
34 helper->argv[2] = transport->url;
36 if (start_command(helper))
37 die("Unable to run helper: git %s", helper->argv[0]);
38 data->helper = helper;
40 write_in_full(data->helper->in, "capabilities\n", 13);
41 file = fdopen(helper->out, "r");
43 if (strbuf_getline(&buf, file, '\n') == EOF)
44 exit(128); /* child died, message supplied already */
48 if (!strcmp(buf.buf, "fetch"))
54 static int disconnect_helper(struct transport *transport)
56 struct helper_data *data = transport->data;
58 write_in_full(data->helper->in, "\n", 1);
59 close(data->helper->in);
60 finish_command(data->helper);
61 free((char *)data->helper->argv[0]);
62 free(data->helper->argv);
69 static int fetch_with_fetch(struct transport *transport,
70 int nr_heads, const struct ref **to_fetch)
72 struct child_process *helper = get_helper(transport);
73 FILE *file = fdopen(helper->out, "r");
75 struct strbuf buf = STRBUF_INIT;
77 for (i = 0; i < nr_heads; i++) {
78 const struct ref *posn = to_fetch[i];
79 if (posn->status & REF_STATUS_UPTODATE)
81 write_in_full(helper->in, "fetch ", 6);
82 write_in_full(helper->in, sha1_to_hex(posn->old_sha1), 40);
83 write_in_full(helper->in, " ", 1);
84 write_in_full(helper->in, posn->name, strlen(posn->name));
85 write_in_full(helper->in, "\n", 1);
86 if (strbuf_getline(&buf, file, '\n') == EOF)
87 exit(128); /* child died, message supplied already */
92 static int fetch(struct transport *transport,
93 int nr_heads, const struct ref **to_fetch)
95 struct helper_data *data = transport->data;
99 for (i = 0; i < nr_heads; i++)
100 if (!(to_fetch[i]->status & REF_STATUS_UPTODATE))
107 return fetch_with_fetch(transport, nr_heads, to_fetch);
112 static struct ref *get_refs_list(struct transport *transport, int for_push)
114 struct child_process *helper;
115 struct ref *ret = NULL;
116 struct ref **tail = &ret;
118 struct strbuf buf = STRBUF_INIT;
121 helper = get_helper(transport);
122 write_in_full(helper->in, "list\n", 5);
124 file = fdopen(helper->out, "r");
127 if (strbuf_getline(&buf, file, '\n') == EOF)
128 exit(128); /* child died, message supplied already */
133 eov = strchr(buf.buf, ' ');
135 die("Malformed response in ref list: %s", buf.buf);
136 eon = strchr(eov + 1, ' ');
140 *tail = alloc_ref(eov + 1);
141 if (buf.buf[0] == '@')
142 (*tail)->symref = xstrdup(buf.buf + 1);
143 else if (buf.buf[0] != '?')
144 get_sha1_hex(buf.buf, (*tail)->old_sha1);
145 tail = &((*tail)->next);
147 strbuf_release(&buf);
149 for (posn = ret; posn; posn = posn->next)
150 resolve_remote_symref(posn, ret);
155 int transport_helper_init(struct transport *transport, const char *name)
157 struct helper_data *data = xcalloc(sizeof(*data), 1);
160 transport->data = data;
161 transport->get_refs_list = get_refs_list;
162 transport->fetch = fetch;
163 transport->disconnect = disconnect_helper;